Pump for delivering motor fuel and the like



P. FISCH, PUMP FOR DELIVERING MOTOR FUEL AND THE LIKE.

APPLICATION FILED NOV. 15. 1920.

Patented June 6, 1922.

. other volatile liquids of .mg boxes on members in movement (axles unnecessary all tightness.

like, used of motor cars,

new, steer-nor LYGN, nleiurci -Q F5251 30:85 DELIVERING iiZOZI'GIt FUEL dill) TEE I l-131E.

. Specification of Letters Patent. I .Pa; nt 1 J {5 jg2 Application filed fliovember 15, 1920. Serial No. seems.

To all whom it may concern.

Be it known that 1, PAUL Freon, France, a citizen of the French Republic, have invented certain new and useful Inn provements in Pumps for Delivering Motor Fuel and the like, of which the followin'g is a specification,

This invention relates to improvements in pumps for deliveringmotor fuel and the for feeding fuel for the engines the tollmving ditiiculties have hitherto been present: V

- '1. lnsuilicient tightness for petrol and the joints or stuffin particular).

2. Uiling of parts in frictional contact rendered ditticult by the presence of the petrol. I 3. Necessity of actuating the pump by 'belt or other gearing resulting in complication of construction .mounting, and high cost of production.

The type of pump forming the object of the invention does not comprise any joint on a movable part, as the pump is arranged en tirely inside the fuel tank, which renders It does not require any oiling or any motor actuation.

The invention consists in principle in utilizing for pumping petrol or other volatile liquids, the relative movements of a member of any kind fixed to a non-suspended part of a vehicle forenamplc, the back or front'axle with respect to the suspended vehicle, of which the fuel these movements being transmittedpump proper.

An example of construction of the invention is illustrated-in the annexed drawings,

to the in which Fig; 1 is a vertical section through the axis of the pump.

Fig. 2 is a diagram illustrating the arrangement of the device at the back of the vehicle. v

i The body of the pump is formed by asuitable cylinder of metal in which the body of the pump proper b is bored parallel and eccentric to the axis of said cylinder.

In the-maximum thickness of the Walls of the body of the pump and parallel to the axis is bored the feed channel a. The upper part of the body of the pump is closed. by a of Lyon,

tank forms pant,

well having a central opening-d for'the passcge of the piston rod 6, and is also provided with a threaded union 7' in extension of the channel 0, and on which the feed pipe 1s mounted. The pump body is screw threaded outside at g in order that it can be screwed into a union Z in the top if the fuel.

tank r in such a Way that the body of the pump projects into this reservoir to within a slight distance from the bottom.

Further, the inner surface of the lower end of the body 7). is screw threaded to re ceive stopper 5, provided inside with M tube 2' comprising a seat for a ball valve of any kind provided with a spring;

or not.

The interior of the body in communication with the feed tube 0 by an opening 7', and on theother hand it is conimunication with the fuel tank along the whole of the part situated above the highest point of the stroke of the piston m by a series of openings such as it. L

The feed tube 0 comprises a suitable seat intended to receive a ball 'u or a spring or other valve of any kind. This valve as well as the valve q are arranged to assure the circulation of the fuel in a suitable direction.

in the body of the-pump is a sliding piston on fixed at the end of the vertical rod 2, the upper end of which is provided with a head 8 provided"with a hi'conical hole 8. This rod 0 carries besides, at a suitable height in the interior of the body of the pump, a disk it intended to guide and support the rod. A bracket 0 supporting the shaft p of the actuating member is fined on the top of the body of the pump. I

The pump is actuated by any suitable mechanical connection between the point chosen of the parts not suspended of the vehicle and the upper part of the rod 6 of the piston m.

In particular to prevent'too sudden movements elastic transmission means or" any suit able kind can beemploycd. Fig. Qshows an example of such means.

0n one of the bearing blocks of the rear axle of the vehicle is'mounted a collar w on which is fixed a pin c, the free end of which is'provide'd with a head a provided with a biconical hole in which is engaged one of the ends of a plate spring 1 oscillating on the shaft p, rotatable freely at the extremity of the .bracket 0Q The other end of the spring 2'. is engaged in the hole s in the head a of the piston rod 6.

The action is easily understood.

'hen the vehicle running: the back axle takes a succession of vertical movements of very varying amplitude and these movements are transmitted to the spring plate 1'. r

The fuel reservoir 3 being integral with the frame of the car and the body of the pump being fixed inthis reservoir, it follows that the spring r oscillates round-the fixed point p and that its movements of oscillation are transmitted to the rod e which in consequence effects alternately rising and falling vertical movements.

The rise of the piston causes the suction of the fuel from the tank into the pump body 7); its descent causes the expulsion of the fuel into the channel 0. The piston has no need to be absolutely tight and does not require packings, its cylindrical surface is provided with annular grooves to lessen the loss of charge. The lack of tightness is translated into a diminution of feed which has no inconvenience in this case asthe teed required is generall small andthe amplitude of the movements as well as their "frequency will always produce an amply sufi'icient feed.

the rod a and to v The arrangement of details would vary according to the particular application of the invention.

What I claim as my invention and desire to secure by Letters Patent of the United States is 1-- A pump for supplying fuel for the engines of motor vehicles, comprising a fuel tank mounted on a suspended part of the motor vehicle, a vertical pump body mounted in the top of said tank and ext-ending downwardl therein andihaving orifices in its wall communicating with said tank, a piston movable in said pump body, a rod attached to said piston, means for guiding said piston, a delivery conduit in communication with the lower end of said pump body and leading to the point of consumption of said fuel, a valve at the pointof junction of said conduit with said'bod v, an inlet valve at the base of said body and means for actuating said piston connected to a nonsuspcnded part of the vehicle, and operated by the relative movements of the suspended.

and non-suspended parts of the vehicle.

In witness whereof I have signed this specification in the presence of two witnesses.

PAUL FISCH. Witnesses JULIAN KEMBLI: SWEENEY, Gas'roN JEANMAUS. 

